SportsMichael Phelps Breaks 400 Meter Swim RecordMichael Phelps Breaks 400 Meter Swim RecordThe Associated PressSwimmer Michael Phelps set a new world record in the 400-meter individual medley Sunday at the U.S. Olympic trials. (June 30)Maybe it was the new suit.Wearing the high-tech Speedo LZR Racer, Michael Phelps set a world record Sunday in the 400-meter individual medley.Phelps finished in a time of 4 minutes, 5.25 seconds. That beat his own mark of 4:06.22, set at last year's world championships in Australia when he won seven gold medals.After his arm touched the wall, Phelps looked at the scoreboard, saw the record and thrust his right fist in the air.SOT: Michael PhelpsPhelps hopes to make swimming history in Beijing.He won six gold medals and two bronze at the Athens Olympics, just missing Mark Spitz's record of seven race wins at the 1972 Munich Games. The 23-year old Phelps is determined to knock off the mark in Beijing.